Wildfire Rangers with Alberta Sustainable Resource Development Troy Johanson and Jason McAleenan, part of a strike team, put out hot-spots near the site of the point of origin for the fire around Slave Lake, Alberta on May 19, 2011.(Jimmy Jeong/Jimmy Jeong/www.jimmyshoots.com)

The south-east corner of Slave Lake, was destroyed by fires. An aerial view around Slave Lake, Alberta on May 19, 2011.(Jimmy Jeong/Jimmy Jeong/www.jimmyshoots.com)

Wildfire Ranger with Alberta Sustainable Resource Development Jason McAleenan, part of a strike team, puts out hot-spots near the site of the point of origin for the fire around Slave Lake, Alberta on May 19, 2011.(Jimmy Jeong/Jimmy Jeong/www.jimmyshoots.com)

Alberta Premier Ed Stelmach looks at the remains of a burned car in Slave Lake, Alberta, on Monday, May 16, 2011. Whole neighbourhoods were flattened by a devastating wildfire that swept through the town of 7,000 destroying upwards of 40% of the buildings.(Ian Jackson/The Canadian Press/Ian Jackson/The Canadian Press)

Fire-fighters from the High Level fire department look for hot spots near a destroyed home near downtown Slave Lake, Alberta May 16, 2011.(Todd Korol/Reuters/Todd Korol/Reuters)

A row of new Ford trucks sit completely destroyed at the Ford dealership in Slave Lake, Alberta May 16, 2011.(Todd Korol/Reuters/Todd Korol/Reuters)

The new town office lies in ruins after it burnt down in Slave Lake, Alberta May 16, 2011.(Todd Korol/Reuters/Todd Korol/Reuters)

A fire-fighter from the Strathcona fire department searches for hot spots at a destroyed neighborhood in Slave Lake, Alberta May 16, 2011.(Todd Korol/Reuters/Todd Korol/Reuters)

The smouldering remains of houses in Slave Lake, Alberta, on Monday, May 16, 2011. Whole neighbourhoods were flattened by a devastating wildfire that swept through the town of 7,000 destroying upwards of 40% of the buildings.(Ian Jackson/The Canadian Press/Ian Jackson/The Canadian Press)

All that remains of a house in Slave Lake, Alberta, on Monday, May 16, 2011 is a set of steps.(Ian Jackson/The Canadian Press/Ian Jackson/The Canadian Press)

Residents of Slave Lake find refuge at the Athabasca Regional Multiplex. A massive forest fire stoked by strong winds burnt through the southeast of Slave Lake, Alberta on May 16, 2011.(Jimmy Jeong/www.jimmyshoots.com/Jimmy Jeong for the Globe and Mail)

Residents of Slave Lake find refuge at the Athabasca Regional Multiplex. A massive forest fire stoked by strong winds burnt through the southeast of Slave Lake, Alberta on May 16, 2011.(Jimmy Jeong/www.jimmyshoots.com/Jimmy Jeong for the Globe and Mail)

Residents of Slave Lake find refuge at the Athabasca Regional Multiplex.(Jimmy Jeong/www.jimmyshoots.com/Jimmy Jeong for the Globe and Mail)

Residents of Slave Lake find refuge at the Athabasca Regional Multiplex.(Jimmy Jeong/www.jimmyshoots.com/Jimmy Jeong for the Globe and Mail)

Residents of Slave Lake find refuge at the Athabasca Regional Multiplex.(Jimmy Jeong/www.jimmyshoots.com/Jimmy Jeong for the Globe and Mail)

Firefighters look over the remains of a house in Slave Lake Alberta after a massive forest fire stoked by strong winds burnt through the community.(Jimmy Jeong for the Globe and Mail/Jimmy Jeong for the Globe and Mail)

A helicopter works to contain a forest fire as it tore through the community of Slave Lake Alberta.(Jimmy Jeong for the Globe and Mail/Jimmy Jeong for the Globe and Mail)

Firefighters work to save a house in Slave Lake.(Jimmy Jeong for the Globe and Mail/Jimmy Jeong for the Globe and Mail)

The burned out shell of homes are seen in Slave Lake Alberta after a forest fire ripped through the community.(Jimmy Jeong for the Globe and Mail/Jimmy Jeong for the Globe and Mail)

Firefighters put out hot spots after a forest fire hit the community of Slave Lake, Alberta.(Jimmy Jeong for the Globe and Mail/Jimmy Jeong for the Globe and Mail)